Alliant Energy Corporation
US ˙ NasdaqGS ˙ US0188021085

SecurityLNT / Alliant Energy Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership113,248 shares
Latest Disclosed Value $ 8,131,076
Advisor Group Holdings, Inc. reports 0.88% decrease in ownership of LNT / Alliant Energy Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 113,248 shares of Alliant Energy Corporation (US:LNT) valued at $8,126,676 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 114,254 shares of Alliant Energy Corporation. This represents a change in shares of -0.88% during the quarter. The current value of the position is $8,252,382 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ALLIANT ENERGY COM 018802108 113,248 -1,006 -0.88 8,131 9.42 0.0069
2026-02-17 2025-12-31 13F ALLIANT ENERGY COM 018802108 114,254 -5,053 -4.24 7,432 -5.71 0.0109
2025-11-14 2025-09-30 13F ALLIANT ENERGY COM 018802108 119,307 4,879 4.26 7,881 13.84 0.0110
2025-09-04 2025-06-30 13F/A-1 LLIANT ENERGY COM 018802108 114,428 21,274 22.84 6,923 15.42 0.0123
2025-08-13 2025-06-30 13F LLIANT ENERGY COM 018802108 145,589 52,435 8,640 0.0100
2025-05-12 2025-03-31 13F ALLIANT ENERGY COM 018802108 93,154 -60,013 -39.18 5,998 -32.02 0.0134
2025-06-06 2024-12-31 13F/A-1 ALLIANT ENERGY COM 018802108 153,167 21,249 16.11 8,824 10.16 0.0198
2025-02-07 2024-12-31 13F ALLIANT ENERGY COM 018802108 146,585 14,667 8,618 0.0220
2024-11-13 2024-09-30 13F ALLIANT ENERGY COM 018802108 131,918 -5,041 -3.68 8,009 14.86 0.0181
2024-08-13 2024-06-30 13F ALLIANT ENERGY COM 018802108 136,959 -2,578 -1.85 6,974 -0.87 0.0165
2024-05-10 2024-03-31 13F ALLIANT ENERGY COM 018802108 139,537 -189,436 -57.58 7,034 -58.34 0.0157
2024-02-12 2023-12-31 13F ALLIANT ENERGY COM 018802108 328,973 -163,701 -33.23 16,884 -29.28 0.0295
2023-11-13 2023-09-30 13F ALLIANT ENERGY COM 018802108 492,674 144,487 41.50 23,876 30.64 0.0353
2023-08-21 2023-06-30 13F/A-1 ALLIANT ENERGY COM 018802108 348,187 29,109 9.12 18,277 7.22 0.0328
2023-08-10 2023-06-30 13F ALLIANT ENERGY COM 018802108 350,040 30,962 18,275 0.0050
2023-05-12 2023-03-31 13F ALLIANT ENERGY COM 018802108 319,078 56,319 21.43 17,045 17.49 0.0321
2023-02-10 2022-12-31 13F ALLIANT ENERGY COM 018802108 262,759 26,643 11.28 14,509 15.93 0.0294
2022-11-14 2022-09-30 13F ALLIANT ENERGY COM 018802108 236,116 32,533 15.98 12,514 4.82 0.0286
2022-08-10 2022-06-30 13F ALLIANT ENERGY COM 018802108 203,583 36,046 21.52 11,938 15.97 0.0263
2022-05-04 2022-03-31 13F ALLIANT ENERGY COM 018802108 167,537 -8,639 -4.90 10,294 -4.91 0.0200
2022-02-03 2021-12-31 13F ALLIANT ENERGY COM 018802108 176,176 12,359 7.54 10,825 18.04 0.0205
2021-11-05 2021-09-30 13F ALLIANT ENERGY COM 018802108 163,817 24,639 17.70 9,171 18.09 0.0191
2021-08-02 2021-06-30 13F ALLIANT ENERGY COM 018802108 139,178 5,720 4.29 7,766 7.41 0.0168
2021-05-13 2021-03-31 13F ALLIANT ENERGY COM 018802108 133,458 22,890 20.70 7,230 26.86 0.0174
2021-02-10 2020-12-31 13F ALLIANT ENERGY COM 018802108 110,568 5,104 4.84 5,699 4.65 0.0152
2020-11-12 2020-09-30 13F ALLIANT ENERGY COM 018802108 105,464 -6,824 -6.08 5,446 1.36 0.0163
2020-08-14 2020-06-30 13F ALLIANT ENERGY COM 018802108 112,288 5,052 4.71 5,373 6.21 0.0180
2020-05-18 2020-03-31 13F ALLIANT ENERGY COM 018802108 107,236 107,236 5,059 0.0207
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.